Trolley



L; W. KAEMPF.

TROLLEY.

APPLlcAlon FILED FEB. 24. 1920.

1,375,591 Patented Apr.l19, 1921.

PWA/aferw/of..

ff O/ UNITED STATES TROLLEY.

Appii'cationie-a February 24, 1920. serial ivo. 361,034.

To all whom t may concern.' p

Be' it known that I,LUDwI'G W. I enivirr, a citizen' of the yUnited States, residing at Fort Scott, in the county of Bourbon and State of Kansas, have invented. certainfnewl and useful Improvements in Trolleys, of,

which the following is a speci'cation.

This invention relates to improvementsY vin trolleys and more particularly to an improved trolley ole head `and the primary object of the invention is to provide a. trolley pole head so constructed and mounted that the trolley wheel will follow .the wire, in .rounding curves or when traveling at high speed, without likelihood of the wheel jumping the wire Vor Aimposing any such strain thereon as would be liable to break the Wire. p U

Another object of the invention is to so construct and mount the head of the trolley pole that the head will maintain an upright position and run evenly on .the wire notwithstanding the swinging motion of the pole in rounding curves. 0

In the accompanying drawings:

Figure 1 is a view in elevation of the device embodying the present invention;

Fig. 2 is a vertical front to rear sectional View therethrough; i

Fig. 3 is a vertical transverse sectional view.

In the drawings the trolley pole is indicated in general by the numeral 1 and the upper end portion of the pole, indicated by the numeral 2, is flattened as shown in ig. 2 of the drawings to provide for the application thereto of the trolley pole head which is indicated in general by the numeral 3.

The said head comprises a hollow body preferably of the segmental form shown in Fig. 1 and including spaced walls 4 and 5 and ,connecting walls 6 which extend between and may be integral with the lateral edges of the walls 4 and 5. At its upper or minor end the head is provided with a pair `of spaced upstanding bracket members 7 rotatably supporting between them the trolley wheel which is indicated by the numeral 8. It will be understood, however, that while the head 3 in the illustrated embodiment of the invention supports a trolley wheel, some other type of contact member might be supported by the head, as for example, a shoe.

It will be observed by reference to the drawf ings, that the axis of the wheel 8 extends transversely with relation to the pole and in the head'upon thel pole, the pole is formed in its upper 'end-portion 2 and near'its `upper extremity with an opening 9v the wall of which is threadedto receive the intermediate portion of a bolt 10, which intermediate l portion ofthe bolt is threaded into the saidv opening v9. The end portions of the bolt t pivotally through openings 11 formed in specification of Letters l-a'tent. Patented Apr. 19, 1921- -Y a plane between the planes occupied by the l Vwalls 4 and 5 of the head 3. In' mounting thewalls 4 and 5, and washers 12 and nuts '13' are fitted onto the ends of the bolt and thus hold the head pivotally assembledwith thebolt so that the head may have oscillatory movement transversely of thev pole.

In order that the head may be normally yieldably held in a centered position with' relation to the pole, means is provided which will now be described. The numeral 14 indicates in general a spring member which constitutes one element of the means referred to and which includes spaced arms 15 connected at their upper ends by an open eye 16 which fits one end of the bolt 10, the member 14 being disposed against the outer face of the wall 5 of the body of the head 3. From the eye 16, the side members 15 extend downwardly between lugs 17 which are provided upon the outer face of the wall 5 of the head and prevent pivotal movement of the member 14 about the bolt 10. A lug 17 is also-provided upon the wall 5 and engages the upper side of the eye 16 and prevents upward displacement of the spring member. Near theirV lower ends the spaced portions of arms 15 extend between the wall 5 and an arcuate guide member 18 which is secured at its ends to the said wall 5 and which has its intermediate vportion spaced from the said wall. A bolt 19 is threaded at its intermediate portion into an opening 20 formed in the flattened upper portion 2 of lthe pole 1 and this bolt near its ends projects through arcuate slots 21 formed in the walls4 and 5 of the head concentric to the pivot bolt 10, nuts 22 and washers 23 being iitted onto the endsV of the said bolt 19. rIhe lower end portions of the arms 15 are slightly bowed outwardly in opposite directions as indicated by the numeral 24 and these portions of the arms engage the opposite sides of the adjacent end of the bolt 19 under normal conditions. Thus the member 14, by its resiliency', yieldably holds the head 3 in an upright or centered position with relation to the trolley pole and any Y the lateral oscillatory movement of the head is,

yeldably resisted by one or the other of the arms as will be evident by reference to Fig. 1 and the full and dotted line positions combination with a pole or the like, of a illustrated therein.

From the foregoing description of the invention it will be evident that while the head will normally be held in centered p0- sition with relation to the pole, nevertheless it may have oscillatory `movement transversely of the pole which movement is, `however, yieldably resisted by the resilient arms of the member MJ As `a consequence when the pole swings to oneside or the other in roundin a curve or because of swaying of the car y which it is supported when the car is traveling at high speed, the head 3 will be maintained in uprightV position and with its wheel 8in` engagement with the trolleylwire regardless of thefmovement of o e. Y

I aving thus described the invention, what is claimed as new is l. In a device oftheclass described, the` combination with a pole or the like, of a head mounted thereon for transverse oscil-l by thehead, and a pair of springlegs for resisting movement of the head in opposite directions. -Y

2. In a device of the class described, the

head pivotally supported thereon for transverse oscillatory movement, an abutment element carried by the pole, and means carried by the head and'coacting with the abutment element to yieldably resist such movement of the head, said means comprising a spring loopixed to the head at the loop end and having legs disposed on opposite sides of said abutment' element.

3. In a device ,of the class described, the combination with a polegor the like, of a head pivotallymounted thereon for transverse oscillatory movement, a contact element carried'by the head,kan abutment element carried by the pole, the head having a slot through which .i the abutment element projects, anda resilient member disposedY against the headand having spaced resilient arms for coaction at their free ends with the opposite sides of the abutment element.` V

In testimon whereof I aiiix my signature.` LUD IG W. KAEMPE-, [11. s] 

